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Check for gas leaks
Before starting the boiler, and during initial operation,
use a leak detector or smell near the fl oor and around
the boiler for gas odorant or any unusual odor. Remove
boiler jacket door and smell the interior of the boiler
jacket.
.
The gas valve is factory-set for the
correct outlet pressure. This setting is suitable for
natural gas and propane, requiring no fi eld adjustment.
Attempting to alter or measure the gas valve outlet
pressure could result in damage to the valve, causing
potential severe personal injury, death or substantial
property damage.
— Your propane supplier mixes
an odorant with the propane to make its presence
detectable. In some instances, the odorant can fade,
and the gas may no longer have an odor. Before startup
(and periodically thereafter), have the propane supplier
verify the correct odorant level in the gas.
Remove test port cap on vent adapter
Part number 550-100-260/0520
99
ECO
®
Tec
GAS-FIRED WATER BOILER – 80/110/150/199 BOILER MANUAL
Check thermostat circuits
1. Disconnect wires connected to the
thermostat terminals (see Field
wiring, beginning on page 58 for low voltage terminal
locations and application information). Mark the
wires before removing to avoid wiring errors when re-
connecting them
2. Close each thermostat, zone valve and/or relay in the
external circuit one at a time and check the voltmeter
reading at each wire to a ground to ensure no voltage is
being feed back into the boiler’s control module.
3.
4. If a voltage reading is measured on the incoming wires,
check and correct the external wiring.
. This could cause control
damage.
5. Once the external thermostat circuit wiring is checked and
corrected if necessary, reconnect the external thermostat
circuit wires.
Inspect/fi ll condensate system
Inspect the condensate drain line, condensate PVC fi ttings and
condensate trap. (See page 56 for component locations.)
1. Remove test port cap on vent adapter (see Figure 91 ).
2. Pour one cup full of clean water into test port.
3. Ensure condensate trap fi lled with water.
4. Reinstall test port cap on vent adapter.
The condensate trap must be fi lled with water during
all times of boiler operation to avoid fl ue gas emission
from the condensate drain line. Failure to fi ll the trap
could result in severe personal injury or death.
Startup — fi nal checks
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